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Finding the Fourth Proportional to 210,842.52, 290,975.58 and 121,447.32

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Solution

The fourth proportional to 210,842.52, 290,975.58 and 121,447.32 is: 167,604.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,842.52 : 290,975.58 = 121,447.32 : x
  2. Step 2: Convert to fraction form
    210,842.52/290,975.58 = 121,447.32/x
  3. Step 3: Cross multiply
    210,842.52x = 290,975.58 × 121,447.32
  4. Step 4: Simplify right side
    210,842.52x = 35,338,204,376.45
  5. Step 5: Solve for x
    x = 35,338,204,376.45/210,842.52
  6. Step 6: Final answer
    x = 167,604.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.